hi i have a new garage that i wish to paint.. its got T-111 siding.. im planning to spray the sides but want to hand paint the front... does a roller work at all with the rough surface of the T-111 or do i need to brush it?

Greetings! It’s my first time here and I can’t seem to find any threads that address my particular problem. I’m a homeowner with a 16 ft wide sectional door using an overhead screwdriven residential opener. Pretty basic. My quest is to continue to be able to open the door automatically without obstructing the overhead any more than the door/tracking does (i.e., no overhead opener). Specific questions: 1) Would a jackshaft (like the one in the link) work for this purpose? The garage ceiling is only 8ft high. http://www.prodoorindy.com/co_liftmaster_j.php 2) Has anyone heard/seen of this “Sidemount” door opener and would it work? http://www.sidemountopener.com/ 3) Does anyone have any ideas or insights? Thanks in advance.